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The Thyroid Gland

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The thyroid gland is a small, butterfly-shaped gland located in the neck and covers the anterior surface of the trachea. The gland has two lateral lobes connected by a thin tissue mass called the isthmus. Internally, each lobe comprises many small spherical structures known as thyroid follicles, surrounded by a network of blood vessels.
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Low blood levels of the thyroid hormones — triiodothyronine (T3) and thyroxine (T4) — signal the hypothalamus to release the thyrotropin-releasing hormone (TRH). TRH then reaches the pituitary gland and stimulates the release of thyroid-stimulating hormone(TSH) into the bloodstream.
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Co-activators and Co-repressors

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Related Experiment Video

Updated: Jan 29, 2026

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Generation of a Mouse Spontaneous Autoimmune Thyroiditis Model

Published on: March 17, 2023

The Cracking Thyroid

Luis Fernando Serrano¹, Sergio Valencia¹

¹From the Department of Radiology, Fundación Santa Fe de Bogotá, Carrera 116 No. 9-02, Bogotá, Colombia 110111.

|February 20, 2019

Summary

No abstract available in PubMed .

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